Universiteit Leiden

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Frans Sonneveldt

Professor of (International) Estate Planning

Prof.dr. F. Sonneveldt
+31 71 527 2727

Professor Sonneveldt joined the Institute of Private Law on 1 September 2007.

More information about Frans Sonneveldt

Professor Sonneveldt is a Partner at law firm Mazars Private Clients Tax Consultants in the Netherlands, The Hague.

He is a Professor at Leiden University (Department of Notarial Law) and a lecturer in the university's International Tax Programme. As a member of the Moltmaker Committee, he was involved in drawing up a report on the revision of the Dutch Inheritance Tax Act of 1956. He also serves as a Deputy Judge at the Court of Appeal of ‘s-Hertogenbosch.

Professor Sonneveldt was a panelist in a seminar on international estate planning at the 2002 Oslo Congress of International Fiscal Association (IFA). He chaired a seminar on this subject for IFA in Vienna in September 2004 and was the Chair of subject 2 (‘death as a taxable event and its international ramifications’) at the 2010 IFA Congress in Rome.

Professor Sonneveldt is a member of the International Academy of Estate and Trust Law (IAETL) and the Society of Trust and Estate Practitioners (STEP). He was a visiting scholar at Harvard Law School and a guest lecturer at Queens’ College, Cambridge, New York University and the University of Neuchâtel, Switzerland. He is also a lecturer in the Executive Master programme of Advanced Studies in International Taxation at the University of Lausanne, Switzerland. Since 2014, he has been a member of the European Commission's ‘group of experts on removing tax problems facing individuals who are active across borders within the EU’.

Professional authorities

  • Anglo-American Trust and other trust-like devices
  • Estate Planning including legal and tax advice on last wills, prenuptial agreements, divorces, gifts, emigration and immigration

Professor of (International) Estate Planning

  • Faculteit Rechtsgeleerdheid
  • Instituut voor Privaatrecht
  • Notarieel Recht

Work address

Kamerlingh Onnes Building
Steenschuur 25
2311 ES Leiden
Room number C2.17



  • Mazars Bewind & Executele B.V. Bestuurder
  • Hof 's-Hertogenbosch Raadsheer plaatsvervanger
  • Mazars Bewind & Executele directie en advisering
  • Stichting Administratiekantoor De Jonge Beleggers Bestuurder
  • Stichting Administratiekantoor Curpohold Bestuurder
  • Stichting NLFiscaal Annotator
  • Stichting Internationaal Juridisch Instituut Bestuurder
  • Genootschap van Estate Planners Voorzitter Bestuur
  • Vereniging van Estate Planners in het Notariaat (EPN) Lid van Wetenschappelijk Advies Raad (WAR)
  • Cornelis Kruseman-Jozina Maria Cornelia Ising Stichting Voorzitter van het Bestuur
  • EPN Buitengewoon lid
  • European Association of Tax Law Professors (EATLP) Member
  • Fiscaal Bureau voor Het Notariaat (FBN) Redacteur
  • NDFR Successierecht en overdrachtsbelasting Redactielid
  • Nederlands Tijdschrift voor Fiscaal Recht lid van de Redactieraad
  • New York University Practice Council
  • Society of Trust and Estate Practitioners (STEP) Lid
  • Stichting Instituut voor Nationale en Internationale Estate Planning, verbonden met de UU lid Raad van Advies
  • The International Academy of Estate and Trust Law (San Francisco, CA) Academician
  • Weekblad voor Privaatrecht Notariaat en Registratie (WPNR) Vaste medewerker
  • Grotius Academie hoofddocent Estate Planning
  • Frans Sonneveldt Holding B.V. holdingactiviteiten
  • Frans Sonneveldt Praktijkvennootschap B.V. fiscale en civielrechtelijke advisering en cursussen
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